Krebs on Security

AUGUST 12, 2020

Several stories here have highlighted the importance of creating accounts online tied to your various identity, financial and communications services before identity thieves do it for you. ” In short, although you may not be required to create online accounts to manage your affairs at your ISP, the U.S. .”

Accountability 356

Accountability Mobile Banking Passwords 356

Security Affairs

APRIL 26, 2025

African multinational telecommunications company MTN Group disclosed a data breach that exposed subscribers’ personal information. MTN Group Limited is a South African multinational telecommunications company headquartered in Johannesburg. ” reads the statement published by the company.

Data breaches 103

Data breaches Telecommunications Financial Services Mobile 103

Krebs on Security

MARCH 20, 2023

Image: Shutterstock Telecommunications giant AT&T disclosed this month that a breach at a marketing vendor exposed certain account information for nine million customers. AT&T’s disclosure said the information exposed included customer first name, wireless account number, wireless phone number and email address.

Mobile 314

Mobile Wireless Advertising Accountability 314

Krebs on Security

APRIL 11, 2024

New York City based Sisense has more than 1,000 customers across a range of industry verticals, including financial services, telecommunications, healthcare and higher education. ” “We are taking this matter seriously and promptly commenced an investigation,” Dash continued.

CISO 325

CISO Encryption Telecommunications Financial Services 325

Security Boulevard

MARCH 24, 2025

While MFA is primarily a security feature, its primary privacy benefit is adding another layer of security to prevent unauthorized access to information contained in particular important or sensitive accounts. Specifically, it was fetching account icons and defaulted to opening password reset pages over HTTP.

Surveillance 75

Surveillance Telecommunications Malware Data breaches 75

Security Affairs

MARCH 27, 2025

Arkana Security, a new ransomware group, claims to have breached the telecommunications provider WideOpenWest (WOW!). is a US-based telecommunications company that provides broadband internet, cable TV, and phone services. million accounts. The new ransomware group Arkana Security claims to have hacked US telecom provider WOW!,

Hacking 75

Hacking Telecommunications Data breaches Internet 75

Krebs on Security

OCTOBER 12, 2020

“We disrupted Trickbot through a court order we obtained as well as technical action we executed in partnership with telecommunications providers around the world,” wrote Tom Burt , corporate vice president of customer security and trust at Microsoft, in a blog post this morning about the legal maneuver. Image: Microsoft.

Healthcare 361

Healthcare Ransomware Internet Internet 361

Security Affairs

DECEMBER 30, 2020

T-Mobile has disclosed a data breach exposing customers’ account’s information. “We are reaching out to let you know about a security incident we recently identified and quickly shut down that may have impacted some of your T-Mobile account information.” ” reads the statement published by the company.

Data breaches 144

Data breaches Mobile Telecommunications Accountability 144

The Last Watchdog

APRIL 13, 2022

The Russian government, military, and intelligence service may wish to achieve some operational effect, for example, disrupting the power grid or interfering with telecommunications infrastructure, which may be part of a larger war plan. Accounting for humans. Each of these organizations performs cyber operations for various reasons.

Cybersecurity 214

Cybersecurity Cybercrime Education Government 214

SecureWorld News

MAY 16, 2025

Google's report confirms that UNC3944 continues to "demonstrate persistence and adaptability in targeting organizations, particularly those in the retail, hospitality, and telecommunications sectors." Educate and empower your help desk Implement callback verification procedures before password resets. Atera, AnyDesk).

Retail 75

Retail Social Engineering Engineering Telecommunications 75

Troy Hunt

MARCH 27, 2018

It began with a visit to the local Telstra store earlier this month to upgrade a couple of phone plans which resulted in me sitting alone by this screen whilst the Telstra staffer disappeared into the back room for a few minutes: Is it normal for @Telstra to display customer passwords on publicly facing terminals in their stores?

Passwords 192

Passwords Banking Mobile Telecommunications 192

Security Affairs

JULY 10, 2021

Mint Mobile discloses a data breach, an unauthorized attacker gained access to subscribers’ account information and ported phone numbers. Mint Mobile is an American telecommunications company which sells mobile phone services and operates as an MVNO on T-Mobile’s cellular network in the United States.

Mobile 143

Mobile Data breaches Telecommunications Passwords 143

Security Affairs

FEBRUARY 27, 2021

The telecommunications giant T-Mobile disclosed a data breach after some of its customers were apparently affected by SIM swap attacks. The telecommunications provider T-Mobile has disclosed a data breach after it became aware that some of its customers were allegedly victims of SIM swap attacks.

Mobile 131

Mobile Data breaches Telecommunications Accountability 131

Krebs on Security

DECEMBER 29, 2022

Internal Revenue Service website for months: Anyone seeking to create an account to view their tax records online would soon be required to provide biometric data to a private company in Virginia — ID.me. A single bitcoin is trading at around $45,000. ” SEPTEMBER. Uber blames LAPSUS$ for the intrusion.

Cryptocurrency 308

Cryptocurrency Cybercrime Computers and Electronics Scams 308

Security Affairs

MARCH 24, 2025

China-linked APT Weaver Ant infiltrated the network of a telecommunications services provider for over four years. During a forensic investigation, Sygnia researchers observed multiple alerts that revealed a re-enabled threat actor account by a service account from an unidentified server.

Telecommunications 64

Telecommunications Encryption Accountability Firewall 64

Security Affairs

JANUARY 20, 2023

Bad news for T-Mobile, the company disclosed a new data breach that resulted in the theft of data belonging to 37 customer accounts. T-Mobile suffered a new data breach, threat actor stole the personal information of 37 million current postpaid and prepaid customer accounts. ” reads the press release published by the company.

Data breaches 98

Data breaches Mobile Accountability Telecommunications 98

Krebs on Security

JUNE 28, 2018

Many people, particularly older folks, proudly declare they avoid using the Web to manage various accounts tied to their personal and financial data — including everything from utilities and mobile phones to retirement benefits and online banking services. Postal Service or the Social Security Administration.

Banking 215

Banking Accountability Mobile Media 215

Security Affairs

MARCH 23, 2022

Microsoft has now confirmed that the attackers have compromised the account of one of its employees gaining limited access to source code repositories. Our investigation has found a single account had been compromised, granting limited access. No customer code or data was involved in the observed activities. Pierluigi Paganini.

Accountability 103

Accountability VPN Social Engineering Hacking 103

Security Affairs

FEBRUARY 23, 2024

Australian telecommunications provider Tangerine disclosed a data breach that impacted roughly 230,000 individuals. The telecommunications provider pointed out that no financial information (credit or debit card numbers, banking details) has been compromised. Access to the affected legacy database has also been closed.”continues

Data breaches 129

Data breaches Telecommunications Banking Mobile 129

Krebs on Security

AUGUST 19, 2020

According to interviews with several sources, this hybrid phishing gang has a remarkably high success rate, and operates primarily through paid requests or “bounties,” where customers seeking access to specific companies or accounts can hire them to target employees working remotely at home.

Phishing 363

Phishing VPN Social Engineering Media 363

Digital Shadows

MARCH 17, 2025

For businesses, this means their compromised access can be resold multiple times, leaving them vulnerable to repeated attacks from different threat actors if passwords arent changed promptly. This plaintext file often contains usernames and passwords, giving attackers immediate access to credentialsno advanced tools or expertise needed.

VPN 133

VPN Authentication Ransomware Risk 133

Security Affairs

NOVEMBER 22, 2019

The US branch of the telecommunications giant T -Mobile disclosed a security breach that according to the company impacted a small number of customers of its prepaid service. The cybersecurity team at T-Mobile discovered an unauthorized access to information associated with a limited number of its prepaid wireless account customers.

Wireless 136

Wireless Data breaches Mobile Telecommunications 136

Krebs on Security

AUGUST 11, 2022

The telecommunications giant stopped short of saying the data wasn’t theirs, but it maintains the records do not appear to have come from its systems and may be tied to a previous data incident at another company. There are no passwords in the database. The largest item in the archive is a 3.6 million records, including 22.8

Mobile 55

Mobile Internet Internet Accountability 55

Krebs on Security

MARCH 5, 2021

In each incident, the intruders have left behind a “web shell,” an easy-to-use, password-protected hacking tool that can be accessed over the Internet from any browser. By all accounts, rooting out these intruders is going to require an unprecedented and urgent nationwide clean-up effort.

Hacking 364

Hacking Software Government Internet 364

Krebs on Security

NOVEMBER 3, 2022

A Twitter account by that name was verified by Kivimaki’s attorney as his, and through that account he denied being involved in the Vastaamo extortion. Kivimaki stopped using his middle name Julius in favor of his given first name Aleksanteri when he moved abroad several years ago. ”

Data breaches 258

Data breaches Cybercrime Accountability Telecommunications 258

Security Affairs

MARCH 16, 2020

Hackers have stolen O2 customers’ data from a database run by Aerial Direct , one of the largest UK partners of the telecommunications services provider. To reassure you, the database did not include any passwords or financial details, such as bank account number or credit card information.” Pierluigi Paganini.

Data breaches 138

Data breaches Telecommunications Passwords Advertising 138

Security Affairs

JANUARY 7, 2024

The group targets government entities, Kurdish (political) groups like PKK, telecommunication, ISPs, IT-service providers (including security companies), NGO, and Media & Entertainment sectors; Over the years, the group enhanced its evasion capabilities. Enable 2FA on all externally exposed accounts.

Media 138

Media Accountability Telecommunications Government 138

Malwarebytes

MARCH 19, 2024

A 42-year-old manager at an unnamed telecommunications company has admitted SIM swapping customers at his store. Armed with an email and password—which are easily bought online— and the 2FA code, an attacker could take over the victim’s online accounts. Katz pleaded guilty before Chief U.S.

Social Engineering 141

Social Engineering Computers and Electronics Mobile Identity Theft 141

Malwarebytes

APRIL 2, 2024

Telecommunications giant AT&T has finally confirmed that 73 million current and former customers have been caught up in a massive dark web data leak. million current AT&T account holders and approximately 65.4 million former account holders. Change your password. We are reaching out to all 7.6M Take your time.

Data breaches 145

Data breaches Passwords Phishing Accountability 145

Security Affairs

JUNE 8, 2022

China-linked threat actors have breached telecommunications companies and network service providers to spy on the traffic and steal data. US NSA, CISA, and the FBI published a joint cybersecurity advisory to warn that China-linked threat actors have breached telecommunications companies and network service providers.

Telecommunications 100

Telecommunications Authentication Passwords Accountability 100

Security Affairs

JANUARY 30, 2024

As an example of compromised accounts, Resecurity outlined exposed access credentials belonging to a major data center and one of the largest vendors providing international-scale network telephony connectivity to governmental and national telecom providers in Africa.

Engineering 139

Engineering Passwords Telecommunications Accountability 139

Security Affairs

DECEMBER 1, 2024

Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press.

Cybercrime 69

Cybercrime Firewall Ransomware Social Engineering 69

Security Affairs

OCTOBER 31, 2019

. “As many as 95% of the credentials contained unencrypted, or bruteforced and cracked by the attackers, plaintext passwords.” ” The following table shows stolen credentials per industry: Most of the login credentials (95%) include plaintext passwords, 76% of them were compromised during the last 12 months.

Passwords 106

Passwords Telecommunications Advertising Retail 106

Security Affairs

MARCH 10, 2023

CPNI is information related to the telecommunications services purchased by the customers, including the number of lines for each account or the wireless plan to which customers are subscribed. Social Security Number, account passwords). ”​ Exposed data don’t include financial information (i.e.

Data breaches 98

Data breaches Hacking Wireless Telecommunications 98

Security Affairs

AUGUST 18, 2021

million current postpaid customer accounts, as well as more than 40 million records of former and prospective customers. Importantly, no phone numbers, account numbers, PINs, passwords, or financial information were compromised in any of these files of customers or prospective customers.” Pierluigi Paganini.

Data breaches 101

Data breaches Mobile Telecommunications Accountability 101

Security Affairs

AUGUST 27, 2019

reported that Hexane is targeting organizations in the oil and gas industry and telecommunication providers. Lyceum was observed using password spraying and brute-force attacks to compromise email accounts of targeted individuals. Security experts at Dragos Inc. ” reads the report published by SecureWork.

DNS 107

DNS Passwords Penetration Testing Social Engineering 107

Security Affairs

MAY 4, 2025

CISA adds Yii Framework and Commvault Command Center flaws to its Known Exploited Vulnerabilities catalog Ireland’s DPC fined TikTok 530M for sending EU user data to China Microsoft sets all new accounts passwordless by default Luxury department store Harrods suffered a cyberattack U.S.

Cyber Attacks 70

Cyber Attacks Cybercrime Malware Phishing 70